public int prihvatiKorisnika(Korisnici korisnik) {
   int updated = 0;
   Session session = HibernateUtil.getSessionFactory().getCurrentSession();
   try {
     session.beginTransaction();
     korisnik.setPrihvacen(1);
     session.update(korisnik);
     session.getTransaction().commit();
     updated = 1;
   } catch (Exception e) {
     System.err.println(e);
     updated = -1;
   } finally {
     if (session.isOpen()) session.close();
   }
   return updated;
 }